Answer:
48 years.
Step-by-step explanation:
Consider the complete question is "The ratio of ages of kissi and esinam is 3:5 and that of esinam and lariba is 3:5. The sum of ages of all 3 is 147 years. whats the age difference between oldest and youngest ?"
It is given that
Kissi : Esinam = 3:5 = 9:15
Esinam : Lariba = 3:5 = 15:25
So, the combined ratio is Kissi : Esinam : Lariba = 9:15:25
Let ages of Kissi, Esinam, Lariba are 9x, 15x and 25x.
Sum of ages of all 3 is 147 years.
The value of x is 3. So, the age of all three are
Since Lariba is oldest and Kissi is youngest, therefore, the difference between their ages is
Hence, difference between oldest and youngest is 48 years.
Answer:
11 inches
Step-by-step explanation:
square root of 121 = 11
Answer:
f(0)=0
Step-by-step explanation:
The number in the parenthesis in a function are what you substitute for x, so do that for the problem:
f(x)=(1/2)(x) --> f(0)=(1/2)(0)
Then solve for f(0) by simplifying the other side of the equation:
f(0)=0
Answer:
I think it's 10 or 10.5 not sure
Step-by-step explanation:
Answer:
The 80% confidence interval for the the population mean nitrate concentration is (0.144, 0.186).
Critical value t=1.318
Step-by-step explanation:
We have to calculate a 80% confidence interval for the mean.
The population standard deviation is not known, so we have to estimate it from the sample standard deviation and use a t-students distribution to calculate the critical value.
The sample mean is M=0.165.
The sample size is N=25.
When σ is not known, s divided by the square root of N is used as an estimate of σM:
The degrees of freedom for this sample size are:
The t-value for a 80% confidence interval and 24 degrees of freedom is t=1.318.
The margin of error (MOE) can be calculated as:
Then, the lower and upper bounds of the confidence interval are:
The 80% confidence interval for the population mean nitrate concentration is (0.144, 0.186).
